Rim tool



R. T. MUN

RIM TOOL Sept. 21,1926. 1,630,695

Filed Feb. 4, 1926 I Ralph T P1511111) Patented Sept. 21,192

UNITED RALPH 'r. MUNN, or WAKEFIELD, MASSACHUSETTS. v

RIM TooL.

Application filed February 4, 1926. Serial No. 85,918;

r The object of this invention isthe' construction of an improved too-l by'means of which a split rim having attached lugs can be contracted and expanded to permit of the application thereto of a pneumatic tire.

I These attached lugs are commonly four in number and are each formed with a bolt hole by means of which to fasten the rim upon the telly of the wheel.

In carrying my invention into effect I provide two oppositely threaded. screw rods united by means of a turn-buckle, and having each at its outer end a. finger adapted to be inserted in the holes in the attached lugs, whereby, through the. turning of the turnbuckle the split ends of the rim can be separated or forced back into placeagain.

In the drawings forming.- part of this specification, Fig. 1 is a side view of a rim tool embodying my. improvements. Fig. 2

is a representation of the same as applied to a split rim preliminary to the latters contraction. Fig. 3 is a view of the same in the and has at its approximate mid-length a secsecond step of the contraction, or as expanding the rim. V

In the showing in Fig. 1, which is slightly over half-size, the turn buckle 1 receives in its ends two oppositelythreaded rods 2 and 3, each havingfa finger-4; at its out-erend adaptedto enter a bolt hole "5 in one'ofthe attached lugs 6 of the split rim 7. The rod 3 is nearly twice the length ofthe rod 2,

ond finger 9 projecting therefrom oppositely from its finger .4 the same being preferably electric-welded thereto. 7 i

The threads 10 on the two rods are not only opposite in pitch, but I prefer to have them' doubled in order that the rotation of the turn-buckle shall the more rapidly act upon the two rods 2, i

In using this rim tool, its'fingers 4 are l v first inserted in the holes 5 oftwo diametri cally opposite lugs 6, asxshown in and thenthe turn buckle 1 isrotated until the p end'll of the rim 7 is pulled inward and rests against the'otherend. The tool is next withdrawn from the holes'5 and the fini ger 9 is inserted in the hole formerly occupied by the finger 4 of the same rod; and the finger of the rod 2 is inserted on the next hole 5 to the right, as viewed in Fig. The turn buckle is now rota-ted until the two ends of the rim overlap farenough to "give the V contraction desired. When the tire has been removed from and another slipped on over. the shrunk rim, the turnbuckle '1 is rotated in an opposite direction until the overlapping end is forced back into-- its normal position. j 1

' I prefer to locate the finger 9 at a poiiit on the rod 3 opposite its finger 4 in order that there maybe no interference with other parts of the rim or tire on'the part of thef fingers by either when the other is being put to use; and-I prefer to have thefingers 4 rack inward slightly in order to ensure against their pullingout from the holes 5 during the contractionor the rim; To pre vent their'worlring out during the expansion.

of the rim, the fingers 4. and 9 are formed with. notches 12 which. by engaging the. edges of the holes 5, provide the desired se.. curity.-'- v 1 L i Vb at claim as my invention is: y A rim ,tool comprising a turn buckle and two rods havingthreads of opposite pitch engaging the same, each rod having affinger at its outer endpa'nd one rod being considerably longer than the other and havingan 80 "located finger" projecting intermediately' therefrom; In testimony invention, I have hereunto set my handthis, 2nd day of February, 1926. V

' s i RALPH T.

that I clainifthe foregoin 

